Just a quick note for those working to optimize your setup. I have observed a fairly noticeable difference between this antenna in a somewhat “clear space” versus when there are objects nearby. It is not an antenna flaw, it is simply physics. Any higher gain antenna should also exhibit the same characteristics. Nearby things affect how they operate…the higher the gain the more the affect.
If this antenna is not working well for you, you may want to make note of anything else in close proximity, I am not sure what the “boundary” distance might be, but assume that more free space is better…and now I’ll stay quiet as I know there are more folks here that are far more knowledgeable than I.